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See below:
There are many reasons or causes of low sodium and each of them require specific treatment
ivfluids, water restriction, demeclocyline, tolvaptan are a few treatments
seek help from a nephrologist.
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Hyponatremia:
Sodium is an important electrolyte that helps regulate the amount of water that's in and around your cells. A normal sodium level is 135 to145 (meq/l. Under 130 is alerting (hyponatremia ).
If you have the symptoms of low blood sodium, see your doctor for a blood test.
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Many causes:
Hormone problems, sometimes related to infections, cancer, lung, heart or liver problems can cause the kidneys to retain extra water and dilute the sodium in the blood. Sometimes medications, or extreme drinking of water can lower sodium, too. Keep in mind that high sugar, cholesterol and protein levels can make the sodium seem low when it is really normal.
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